| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for quickly groping a single specific key which the owner frequently uses, without viewing the key, from a ring key holder holding a plurality of keys. SOLUTION: The ring key holder includes at least two disk plates which each have a hole for insertion of a ring and have a diameter large enough for a thumb and an index finger of the owner to easily pinch perimeter portions of the plates. Then, the ring is inserted into the plates which sandwich the single specific key therebetween.
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